Process for lightening keratin fibres

Abstract

The present invention relates to a process for lightening keratin fibres, comprising the application to the keratin fibres of a composition comprising at least one chemical oxidizing agent, at least one carbonate, at least one bicarbonate and at least one silicate.

1 - 22 . (canceled) 
     
     
         23 . A method for lightening keratin fibers comprising applying to the keratin fibers a composition comprising:
 i) at least one chemical oxidizing agent chosen from hydrogen peroxide, hydrogen peroxide-generating systems other than peroxygenated salts, or mixtures of two or more thereof;   ii) at least one carbonate, at least one carbonate-generating system, or mixtures of two or more thereof;   iii) at least one bicarbonate, at least one bicarbonate-generating system, or mixtures of two or more thereof; and   iv) at least one silicate in a total amount ranging from 2% to 35% by weight, relative to the total weight of the composition.   
     
     
         24 . The method according to  claim 23 , wherein the at least one chemical oxidizing agent is hydrogen peroxide. 
     
     
         25 . The method according to  claim 23 , wherein the total amount of chemical oxidizing agent(s) ranges from 1% to 12% by weight, relative to the total weight of the composition. 
     
     
         26 . The method according to  claim 23 , wherein the total amount of carbonate(s), carbonate-generating system(s), or mixtures of two or more thereof ranges from 0.01% to 20% by weight, relative to the total weight of the composition. 
     
     
         27 . The method according to  claim 23 , wherein the at least one carbonate, at least one carbonate-generating system, or mixtures of two or more thereof is chosen from carbonates. 
     
     
         28 . The method according to  claim 23 , wherein the at least one carbonate is chosen from:
 alkali metal carbonates;   alkaline-earth metal carbonates;   lanthanide carbonates;   transition metal carbonates;   bismuth carbonate;   cadmium carbonate;   thallium carbonate;   zinc carbonate;   compounds of formula (N + R 1 R 2 R 3 R 4 ) 2 CO 3   2− , wherein R 1 , R 2 , R 3  and R 4  are independently chosen from a hydrogen atom or a (C 1 -C 4  )alkyl group optionally substituted with a hydroxyl group;   guanidine carbonate; or   mixtures of two or more thereof.   
     
     
         29 . The method according to  claim 23 , wherein the total amount of bicarbonate(s), bicarbonate-generating system(s), or mixtures of two or more thereof ranges from 0.01% to 20% by weight, relative to the total weight of the composition. 
     
     
         30 . The method according to  claim 23 , wherein the at least one bicarbonate, at least one bicarbonate system, or mixtures of two or more thereof is chosen from bicarbonates. 
     
     
         31 . The method according to  claim 23 , wherein the at least one bicarbonate is chosen from:
 alkali metal bicarbonates;   alkaline-earth metal bicarbonates;   compounds of formula N + R 1 R 2 R 3 R 4 HCO 3   −  wherein R 1 , R 2 , R 3  and R 4  are independently chosen from a hydrogen atom or a (C 1 -C 4 )alkyl group optionally substituted with a hydroxyl group;   aminoguanidine bicarbonate; or   mixtures of two or more thereof.   
     
     
         32 . The method according to  claim 23 , wherein the at least one silicate is chosen from alkali metal silicates, alkaline-earth metal silicates, aluminum silicates, trimethylammonium silicates, or mixtures of two or more thereof. 
     
     
         33 . The method according to  claim 23 , wherein the total amount of silicate(s) ranges from 3% to 35% by weight, relative to the total weight of the composition. 
     
     
         34 . The method according to  claim 23 , wherein the weight ratio of the total amount of carbonate(s), carbonate-generating system(s), or mixtures of two or more thereof to the total amount of silicate(s) ranges from 0.028 to 10. 
     
     
         35 . The method according to  claim 23 , wherein the weight ratio of the total amount of carbonate(s), carbonate-generating system(s), or mixtures of two or more thereof to the total amount of chemical oxidizing agent(s) ranges from 0.1 to 6.6. 
     
     
         36 . The method according to  claim 23 , wherein the weight ratio of the total amount of carbonate(s), carbonate-generating system(s), or mixtures of two or more thereof to the total amount of bicarbonate(s), bicarbonate-generating system(s), or mixtures of two or more thereof ranges from 0.06 to 20. 
     
     
         37 . The method according to  claim 23 , wherein the composition comprises magnesium carbonate in a total amount of less than 5% by weight, relative to the total weight of the composition. 
     
     
         38 . The method according to  claim 23 , wherein the composition comprises at least one persulfate in a total amount of less than 10% by weight, relative to the total weight of the composition. 
     
     
         39 . The method according to  claim 23 , wherein the pH of the composition ranges from 8 to 11. 
     
     
         40 . The method according to  claim 23 , wherein the composition further comprises at least one coloring agent in a total amount of less than 0.1% by weight, relative to the total weight of the composition. 
     
     
         41 . A method comprising applying to the keratin fibers a composition comprising:
 i) at least one chemical oxidizing agent chosen from hydrogen peroxide, hydrogen peroxide-generating systems other than peroxygenated salts, or mixtures of two or more thereof;   ii) at least one carbonate, at least one carbonate-generating system, or mixtures of two or more thereof;   iii) at least one bicarbonate, at least one bicarbonate-generating system, or mixtures of two or more thereof; and   iv) at least one silicate in a total amount ranging from 2% to 35% by weight, relative to the total weight of the composition,   wherein the weight ratio of the total amount of carbonate(s), carbonate-generating system(s), or mixtures of two or more thereof to the total amount of silicate(s) ranges from 0.028 to 10,   wherein the weight ratio of the total amount of carbonate(s), carbonate-generating system(s), or mixtures of two or more thereof to the total amount of chemical oxidizing agent(s) ranges from 0.1 to 6.6, and   wherein the weight ratio of the total amount of carbonate(s), carbonate-generating system(s), or mixtures of two or more thereof to the total amount of bicarbonate(s), bicarbonate-generating system(s), or mixtures of two or more thereof ranges from 0.06 to 20.   
     
     
         42 . A kit comprising:
 a first compartment comprising a composition (A) comprising i) at least one chemical oxidizing agent chosen from hydrogen peroxide, hydrogen peroxide-generating systems other than peroxygenated salts, or mixtures of two or more thereof; and   a second compartment comprising a composition (B) comprising ii) at least one carbonate, at least one carbonate-generating system, or mixtures of two or more thereof;   iii) at least one bicarbonate, at least one bicarbonate-generating system, or mixtures of two or more thereof; and iv) at least one silicate.